A class of 130 very successful 4-4-0 express passenger engines built by George Whale from 1904. After the value of superheating was proved many of the class received superheater boilers with extended smoke boxes and their performance was then indistinguishable from the “George the Fifths”; they retained separate splashers over the driving wheels and so were different in appearance. They were the first of Whale’s larger engines and the last one was not scrapped until 1949.